Happy Health, an Austin-based digital health company building a physician-guided platform for continuous healthcare in the home, has raised $75 million in a Series A funding round led by ARCH Venture Partners and OpenLoop.
Its first clinical application diagnoses obstructive sleep apnea (OSA) in as few as three nights according to the company, replacing months of referrals, waiting lists, and overnight sleep lab studies, using the first and only FDA-cleared smart ring to do so says Happy Health.
Nearly 80% of Americans with obstructive sleep apnea remain undiagnosed, despite the condition being linked to hypertension, cardiovascular disease, stroke, metabolic disorders, depression, cognitive decline, and increased mortality. With roughly one sleep physician for every 43,000 Americans, many patients wait months to receive testing and treatment.
“We’ve built a healthcare system that waits for people to become sick before it acts,” said Dustin Freckleton, MD, Founder and CEO of Happy Health. “I had a stroke at 24 and went undiagnosed with sleep apnea for another seven years, even though it’s a known stroke risk factor. No one should have to experience the worst outcome before the healthcare system notices something is wrong. We built Happy Health to help physicians detect disease earlier and fundamentally change how care is delivered.”
Happy Health’s platform approaches diagnosis differently. Rather than comparing patients against population averages, it continuously builds an individualised physiological baseline unique to each person.
Clinical-grade sensors collect over 2.8 million biometric measurements every night, while AI and first-principles physiological models help physicians distinguish meaningful biological change from normal day-to-day variation. Instead of asking whether a patient looks like everyone else, the platform asks whether they still look like themselves.
The company says its first application focuses on sleep because it offers one of the richest windows into human physiology. Its FDA-cleared Class II medical device, Happy Ring, facilitates the diagnosis of OSA, insomnia, and other sleep-related conditions with 98% accuracy according to Happy Health.
Every night, the body reveals changes across respiratory, cardiovascular, neurological, and metabolic systems, often long before symptoms appear. Happy Health says it believes the same platform can eventually support earlier physician-guided detection and management across cardiovascular, metabolic, and other chronic diseases.
“For decades, healthcare has waited until people are already sick to act,” said Paul Berns of ARCH Venture Partners. “Happy Health is showing that many diagnoses may never need to happen inside a hospital at all. By combining continuous physiological monitoring with physician-guided care, they’re proving what care can look like when it moves into the home.”
